Merge pull request #6242 from scottanderson42/rds-group-modules

Adds modules for managing Amazon RDS parameter and subnet groups.

library/cloud/rds_subnet_group

+#!/usr/bin/python
+# This file is part of Ansible
+#
+# Ansible is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Ansible is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
+
+DOCUMENTATION = '''
+---
+module: rds_subnet_group
+version_added: "1.5"
+short_description: manage RDS database subnet groups
+description:
+     - Creates, modifies, and deletes RDS database subnet groups. This module has a dependency on python-boto >= 2.5.
+options:
+  state:
+    description:
+      - Specifies whether the subnet should be present or absent.
+    required: true
+    default: present
+    aliases: []
+    choices: [ 'present' , 'absent' ]
+  name:
+    description:
+      - Database subnet group identifier.
+    required: true
+    default: null
+    aliases: []
+  description:
+    description:
+      - Database subnet group description. Only set when a new group is added.
+    required: false
+    default: null
+    aliases: []
+  subnets:
+    description:
+      - List of subnet IDs that make up the database subnet group.
+    required: false
+    default: null
+    aliases: []
+  region:
+    description:
+      - The AWS region to use. If not specified then the value of the EC2_REGION environment variable, if any, is used.
+    required: true
+    default: null
+    aliases: [ 'aws_region', 'ec2_region' ]
+  aws_access_key:
+    description:
+      - AWS access key. If not set then the value of the AWS_ACCESS_KEY environment variable is used.
+    required: false
+    default: null
+    aliases: [ 'ec2_access_key', 'access_key' ]
+  aws_secret_key:
+    description:
+      - AWS secret key. If not set then the value of the AWS_SECRET_KEY environment variable is used. 
+    required: false
+    default: null
+    aliases: [ 'ec2_secret_key', 'secret_key' ]
+requirements: [ "boto" ]
+author: Scott Anderson
+'''
+
+EXAMPLES = '''
+# Add or change a subnet group
+- local_action:
+  module: rds_subnet_group
+  state: present
+  name: norwegian-blue
+  description: My Fancy Ex Parrot Subnet Group
+  subnets:
+    - subnet-aaaaaaaa
+    - subnet-bbbbbbbb
+
+# Remove a parameter group
+- rds_param_group: >
+      state=absent
+      name=norwegian-blue
+'''
+
+import sys
+import time
+
+try:
+    import boto.rds
+    from boto.exception import BotoServerError
+except ImportError:
+    print "failed=True msg='boto required for this module'"
+    sys.exit(1)
+
+def main():
+    argument_spec = ec2_argument_spec()
+    argument_spec.update(dict(
+            state             = dict(required=True,  choices=['present', 'absent']),
+            name              = dict(required=True),
+            description       = dict(required=False),
+            subnets           = dict(required=False, type='list'),
+        )
+    )
+    module = AnsibleModule(argument_spec=argument_spec)
+
+    state                   = module.params.get('state')
+    group_name              = module.params.get('name').lower()
+    group_description       = module.params.get('description')
+    group_subnets           = module.params.get('subnets') or {}
+
+    if state == 'present':
+        for required in ['name', 'description', 'subnets']:
+            if not module.params.get(required):
+                module.fail_json(msg = str("Parameter %s required for state='present'" % required))
+    else:
+        for not_allowed in ['description', 'subnets']:
+            if module.params.get(not_allowed):
+                module.fail_json(msg = str("Parameter %s not allowed for state='absent'" % not_allowed))
+
+    # Retrieve any AWS settings from the environment.
+    ec2_url, aws_access_key, aws_secret_key, region = get_ec2_creds(module)
+
+    if not region:
+        module.fail_json(msg = str("region not specified and unable to determine region from EC2_REGION."))
+
+    try:
+        conn = boto.rds.connect_to_region(region, aws_access_key_id=aws_access_key, aws_secret_access_key=aws_secret_key)
+    except boto.exception.BotoServerError, e:
+        module.fail_json(msg = e.error_message)
+
+    try:
+        changed = False
+        exists = False
+
+        try:
+            matching_groups = conn.get_all_db_subnet_groups(group_name, max_records=100)
+            exists = len(matching_groups) > 0
+        except BotoServerError, e:
+            if e.error_code != 'DBSubnetGroupNotFoundFault':
+                module.fail_json(msg = e.error_message)
+        
+        if state == 'absent':
+            if exists:
+                conn.delete_db_subnet_group(group_name)
+                changed = True
+        else:
+            if not exists:
+                new_group = conn.create_db_subnet_group(group_name, desc=group_description, subnet_ids=group_subnets)
+
+            else:
+                changed_group = conn.modify_db_subnet_group(group_name, description=group_description, subnet_ids=group_subnets)
+
+    except BotoServerError, e:
+        module.fail_json(msg = e.error_message)
+
+    module.exit_json(changed=changed)
+
+# import module snippets
+from ansible.module_utils.basic import *
+from ansible.module_utils.ec2 import *
+
+main()